<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
    private $_id;

	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	public function authenticate()
	{
        $user = User::model()->findByAttributes(array(
            'name'=>$this->username,
        ));

        if ($user === null) {
            $this->errorCode = self::ERROR_USERNAME_INVALID;
        } else {
            if ($user->password !== $user->encrypt($this->password)) {
                $this->errorCode = self::ERROR_PASSWORD_INVALID;
            } else {
                $this->_id = $user->id;
                if (null === $user->last_login_time) {
                    $loginTime = time();
                } else {
                    $loginTime = strtotime($user->last_login_time);
                }
                $this->setState('lastLoginTime', $loginTime);
                $this->errorCode = self::ERROR_NONE;
            }
        }

        return !$this->errorCode;
	}

    public function getId()
    {
        return $this->_id;
    }
}
